Correction: The increasing incidence of visceral leishmaniasis relapse in South Sudan: A retrospective analysis of field patient data from 2001–2018

• Gabriel Naylor-Leyland, 
• Simon M. Collin, 
• Francis Gatluak, 
• Margriet den Boer, 
• Fabiana Alves, 
• Abdul Wasay Mullahzada, 
• Koert Ritmeijer